Brake shoe



J. S. THOMPSON.

BRAKE SHOE.

APPLICATION FILED IAN. I9, 1920.

Patented J an. 3, 1922.

arras sarai erica.

JAIES SL THOMPSON, OF EELS-IAM, NET YORK, SSIGNGR T0 TEE AIVIERICAN BRAKE 'SHOE & FOUNDRY DELAWARE.

COMPANY. OF VILMINGTON, DELAWRE. A CORPORTIGN 0F BRAKE SHOE.

Specification of Letters Patent.

` atented Jan. 3, i922.

Application inea January 19, i920. serial ne. 352,423.

To 07.7. whom. #it may conce/m.'

Be it known that I, Jamas S. THoairsoN, a citizen of the Ilnited States, residing at Pelham, in the county of TWestchester and State of New York, have invented certain new and useful Improvements in Brake Shoes, of which the following is a specification.

This invention relates to improvements in brake shoes and it consists of certain improvements in that type of shoe wherein reticulated metal strips are arranged on edge to the wearing face of the shoe and are combined with insert sections or blocks cast thereon or assembled therewith as set forth in my pending applications including applications Serial Nos. 345,532 and 345,534. The object of this invention is to distribute the metal of each reticulated strip in a curved or sinuous line lengthwise of the shoe so that it will not only appear discontinuously in the wearing face of the shoe but will also be located irregularly over a broader area of the shoe and thereby avoid the possibility of cutting or scoring the wheel.

This invention may be embodied in car shoes or in locomotive shoes, solid or sectional and of any kind or variety, with or without reinforcing backs and with or without insertswhich may be cast on the strips or assembled therewith in any suitable manner. In view of the simple character of the invention and of the obvious manner iu which it may be adapted to brake shoes in general, I have deemed it necessary to show in the accompanying drawings only one simple embodiment thereof, and referring thereto- Fig. l is a side elevation of a car shoe, partly in section, illustrating the invention.

Fig. 2 is a plan view of the wearing face of the shoe.

Figs. 3 and 4 are transverse sectional views on the lines 3-3 and 4--4 respectively of Fig. 1.

Referring to the drawings, the body 5 is preferably provided with a suitable reinforcing and strengthening ductile metal back 6 which may be made in any way well known in the art or suitable for the purpose. A plurality of reticulated metal strips 7 are arranged on edge to the wearing face of the shoe and spaced apart between the sides of the shoe. Thesev strips are curved or waved in a more or less sinuous form lengthwise thereof, and preferably in a corresponding niannerso that they may be more easily handled and disposed with reasonable regularity inthe body of the. shoe. Insert sections or blocks 8 of any desired metal and of any suitable shapes may be cast on the strips (as shown) or assembled therewith at spaced intervals lengthwise of the shoe. The sinuous strips and the sections or blocks constitute a. single insert which is placed in the mold wither without the reinforcing back and the body metal is cast thereon in avsolid` form as shown inthe drawings and in my application Serial No. 345,532 or in a sectional form as shown in my application Serial No. 345,534. It will be readily understood that my present invention which consists essentially of a plurality of reticulated metal sinuous strips arranged on edge to the wearing face of the shoe, may be embodied in all forms of shoes and with or without inserts so far as I am aware.

I prefer to make the strips of commercial expanded metal, but they may be made of wire mesh or other binding, bonding or reinforcing reticulated metal, and the seetions or blocks may be made in any shape and of any metal desired.

Owing to the peculiar structural formation of reticulated metal, and particularly expanded metal, the wearing face of a shoe having such metal strips embedded therein on edge will always he of a composite character with the strip metal constantly changing in position thereon. If the strips are straight in form, there will be a discontinuous straight line of each strip metal constantly exposed on the wearing face. To prevent any tendency which may exist for this strip metal to cut or score the wheel this invention contemplates shaping the strips in a more or less sinuous form to avoid thus exposing the strip metal in a straight line on the wearing face. It will be readily observed that theA exposed parts of a sinuous strip will appear 100 in a discontinuous sinuous line on the wearing face and spread transversely over such an area lthat any tendency'of the metal to cut or score the wheel is entirely eliminated.

The metal strips may be arranged in up- 105 right position but I have found that the strip metal will be distributed over the wearing face of the shoe to a greater degree if the strips are arranged in an inclined position to the wearing face as shown in 110 Figs. 3 and et, and l may use them either way with the openingsof the several strips in registration or l in staggered relation. dnd the strips may be spot-welded or otherwise secured to the back 6 if desired. I have shown the strips spaced apart at regular y intervals, which is a desirable construction, but they may be arranged close together in a bundle form if preferred.

As before stated, l have not considered it necessary to illustrate the invention other than in a simple adaptation, for l believe that those skilled in 'the art -will readily understand the application of the invention to the art in general and I therefore reserve the right to make all such adaptations and `embodiments of the invention asV may be fairly covered by the following claims:

I claim: `l. fr brake shoe comprising-a body, and a plurality or correspondingly waved strips of reticulated metal embedded in the body on edge to the wearing face of the shoe.

metal embedded in the body in an `inclined K position on` edge to the' wearingface of the shoe.

B. A brake shoe insert comprising a plurality of sinuons strips of reticulated metal arranged on edge to the wearing face of `the insert and a plurality of sections or blocks cast on said strips and extending trans- -versely of the wearing face of the insert and spaced apart between i'ts ends.

et. A brake shoe'insert comprising a plurality of sinuous strips of expanded metal arranged in an inclined position on edge to the wearing-face of the insert and a plurality of sections or blocks cast on said strips and extending transversely of the insert and spaced apart lengthwise thereof. n

JAMES S. THOMPSON. Witnesses: n p

E. B. SIBBALD, Il. GRANT. 

